mirror of https://github.com/ARMmbed/mbed-os.git
66 lines
1.8 KiB
C++
66 lines
1.8 KiB
C++
#include "mbed.h"
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#include "rtos.h"
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#include "EthernetInterface.h"
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#define CHECK(RC, STEP) if (RC < 0) error(STEP": %d\n", RC)
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struct s_ip_address
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{
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int ip_1;
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int ip_2;
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int ip_3;
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int ip_4;
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};
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int main() {
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char buffer[256] = {0};
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char out_buffer[] = "Hello World\n";
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char out_success[] = "{{success}}\n{{end}}\n";
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char out_failure[] = "{{failure}}\n{{end}}\n";
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s_ip_address ip_addr = {0, 0, 0, 0};
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int port = 0;
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printf("UDPCllient waiting for server IP and port...\r\n");
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scanf("%d.%d.%d.%d:%d", &ip_addr.ip_1, &ip_addr.ip_2, &ip_addr.ip_3, &ip_addr.ip_4, &port);
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printf("Address received:%d.%d.%d.%d:%d\r\n", ip_addr.ip_1, ip_addr.ip_2, ip_addr.ip_3, ip_addr.ip_4, port);
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EthernetInterface eth;
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int rc = eth.init(); //Use DHCP
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CHECK(rc, "eth init");
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rc = eth.connect();
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CHECK(rc, "connect");
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printf("IP: %s\n", eth.getIPAddress());
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UDPSocket socket;
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rc = socket.init();
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CHECK(rc, "socket init");
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printf("UDPClient IP Address is %s\r\n", eth.getIPAddress());
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sprintf(buffer, "%d.%d.%d.%d", ip_addr.ip_1, ip_addr.ip_2, ip_addr.ip_3, ip_addr.ip_4);
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Endpoint echo_server;
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rc = echo_server.set_address(buffer, port);
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CHECK(rc, "set_address");
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rc = socket.sendTo(echo_server, out_buffer, sizeof(out_buffer));
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CHECK(rc, "sendTo");
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int n = socket.receiveFrom(echo_server, buffer, sizeof(buffer));
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CHECK(n, "receiveFrom");
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if (n > 0)
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{
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buffer[n] = '\0';
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printf("%s", buffer);
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if (strncmp(out_buffer, buffer, sizeof(out_buffer) - 1) == 0) {
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socket.sendTo(echo_server, out_success, sizeof(out_success) - 1);
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}
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}
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socket.sendTo(echo_server, out_failure, sizeof(out_failure) - 1);
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socket.close();
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eth.disconnect();
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return 0;
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}
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